|
|||||
|
|
Use of Nb2O5 as nickel passivating agent: characterisation of the Ni/Nb2O5/SiO2 system |
|
| Authors: | Luciana T Santos Evandro B Pereira Narcís Homs Jordi Llorca Pilar Ramírez de la Piscina Marcelo M Pereira |
| Affiliation: | a Escola de Química, UFRJ, C. de Tecnologia, Bloco E, I. do Fundão, CEP 21945-970, Rio de Janeiro, Brazil b Instituto de Química, Dept. Físico-Química, UERJ, Rio de Janeiro, Brazil c Departament de Química Inorgànica, Facultat de Química, Universitat de Barcelona, C/Martí i Franquès 1-11, 08028, Barcelona, Spain d Instituto de Química, UFRJ, Rio de Janeiro, Brazil |
| Abstract: | Niobia-modified silica was used as support for nickel-based catalysts. Catalysts with different nickel loading were prepared by successive incipient-wetness impregnation of toluenic nickel octanoate solutions. The samples were characterised after both calcination and reduction by TEM-EDX techniques and tested in the ethane hydrogenolysis. Their catalytic behaviour was compared to that of related silica-supported nickel catalysts. A high suppression of hydrogenolysis activity (93–99%) was determined for the niobia-modified silica-supported nickel catalysts which do not show nickel particles on silica. |
| Keywords: | Nb2O5 Nickel-based catalysts Incipient-wetness method |
| 本文献已被 ScienceDirect 等数据库收录！ | |